Chainless folding bicycle with front pedals

Abstract

The utility model provides a chainless folding bicycle with front pedals, which comprises a steering handle, a saddle, the pedals, wheels and a bicycle body support connected with the bicycle, the bicycle body support comprises a triangular fixing support, and the lower part of the triangular fixing support is connected with a front wheel through a front wheel support frame; the triangular variable bracket comprises a rear wheel connecting rod and a folding adjusting rod; one end of the rear wheel connecting rod is rotationally connected to the top of the triangular fixing support, and the other end of the rear wheel connecting rod is connected with a rear wheel. One end of the folding adjusting rod is rotationally connected to the rear wheel connecting rod, and the other end of the folding adjusting rod is connected to the lower portion, close to the bottom, of the triangular fixing support in the using state and connected to the top of the triangular fixing support in the folding state. Unfolding and folding of the bicycle are completed in an approximate plane, a large number of mechanical elements are saved, and the bicycle is simple and stable in structural design and high in bearing capacity.

Description

Technical Field

[0001] The present application relates to the technical field of bicycles, and in particular to a chainless folding bicycle with front pedals. Background Art

[0002] At present, there is no widely accepted mature product of chainless bicycle in the market. The main frame of existing bicycle products is generally a single bar. If it is a folding bicycle, there are many movable parts, and a polygonal structure plus lateral parts are often used. In addition, the design of non-front pedals is generally driven by gears or connecting rods, and a large number of connecting parts are required, making the structural design of existing products complex and cumbersome, and there are problems such as high failure rate, poor load-bearing capacity, and poor riding comfort, which cannot meet the user's demand for riding controllability and safety. Utility Model Content

[0003] In order to address the deficiencies in the prior art, the present application provides a chainless folding bicycle with front pedals, the body of which is composed of two triangular brackets, one of which is a deformable bracket. The bicycle is folded and unfolded through the deformable triangular bracket. The structural design is simple and stable, the load-bearing performance is good, and the riding is effortless and comfortable.

[0004] To achieve the above technical objectives, the present application provides a chainless folding bicycle with front pedals, comprising: a steering handlebar, a seat, pedals, wheels, and a body support connected thereto, wherein the body support comprises: a triangular fixed support, the bottom of which is connected to the front wheel via a front wheel support frame; a triangular variable support, which comprises a rear wheel connecting rod and a folding adjustment rod; the rear wheel connecting rod, one end of which is rotatably connected to the top of the triangular fixed support, and the other end of which is connected to the rear wheel; the folding adjustment rod, one end of which is rotatably connected to the rear wheel connecting rod, and the other end of which is connected to the lower part of the triangular fixed support in the folded state, and is connected to the top of the triangular fixed support in the use state.

[0005] Optionally, in the chainless folding bicycle with front pedals as described above, the folding adjustment rods are provided as two left and right folding adjustment rods.

[0006] Optionally, in any of the above described chainless folding bicycles with front pedals, fixing holes are respectively provided on the triangular fixing bracket at two connecting positions of the folding adjustment rod;

[0007] The folding adjustment rod is connected and fixed to the fixing hole on the triangular fixing bracket through a bolt or a latch.

[0008] Optionally, in a chainless folding bicycle with front pedals as described above, the triangular fixed bracket includes: a top cross bar, a diagonal support bar and a front support bar connected end to end to form a triangular structure.

[0009] Optionally, a chainless folding bicycle with front pedals as described above, wherein, in the folded state, the left and right folding adjustment rods are respectively fixed in the fixing holes on the left and right sides of the top cross bar of the triangular fixing bracket by bolts or pins;

[0010] In the use state, the left and right folding adjustment rods are respectively inserted into the fixing holes on the left and right sides of the oblique support rod of the triangular fixing bracket through bolts or pins for fixing.

[0011] Optionally, in any of the above described chainless folding bicycles with front pedals, pedals transmission-connected to the front wheels are respectively arranged on the left and right sides of the front wheels.

[0012] Optionally, a chainless folding bicycle with front pedals as described above, wherein a pedal gear, a transmission gear and a front wheel gear mounted on the axle of the front wheel are arranged in sequence from top to bottom inside the front wheel support frame, wherein the pedal gear is connected to the pedal, and the rotation of the pedal drives the pedal gear to rotate, thereby driving the front wheel gear to rotate through the transmission gear, thereby making the bicycle move.

[0013] Optionally, in any of the above described chainless folding bicycles with front pedals, the front wheel support frame comprises two groups, respectively connecting a pedal on the left side of the front wheel and another pedal on the right side of the front wheel;

[0014] The transmission ratio between the pedal gear and the transmission gear is set to be greater than 1:2.5, and the transmission ratios between the two sets of front wheel support frames and between the transmission gear and the front wheel gear are the same.

[0015] Optionally, in any of the above described chainless folding bicycles with front pedals, the height of the axis of the pedal gear relative to the axis of the front wheel accounts for no more than one third of the height of the front wheel support frame.

[0016] Optionally, a chainless folding bicycle with front pedals as described in any of the above, wherein, in the triangular fixed bracket, the angle between the top cross bar and the oblique support bar is not less than 45 degrees and not more than 60 degrees, and the angle between the top cross bar and the front support bar is greater than 90 degrees and less than 105 degrees; in the triangular variable bracket, when in use, the angle between the rear wheel connecting rod and the oblique support rod is less than 75 degrees.

[0017] The beneficial effects of this application relative to the prior art are:

[0018] The body of the chainless folding bicycle with pedals in front of the present application is composed of two triangular brackets, which are more stable, durable and have stronger load-bearing capacity; one of the triangular brackets is a deformable triangular bracket, which can realize the folding and unfolding of the bicycle by rotating in a nearly plane, which greatly saves the demand for mechanical parts compared with the traditional vertical folding method, and the nearly plane folding operation is simple and efficient;

[0019] The present application moves the pedal to the front wheel, and the front wheel support frame is provided with a pedal gear, a transmission gear, and a front wheel gear installed on the front wheel axle from top to bottom. The bicycle can be rotated without a chain only through a transmission gear in the middle. The structure is simple in design, and riding is labor-saving and comfortable. Moving the pedal forward can also make full use of the space of the body bracket, such as installing a counterweight bracket, an electric motor, and a battery. By installing an electric motor and a battery in a larger space of the body bracket, support is provided for the bicycle to be transformed into an electric folding bicycle. The present application can produce a lighter, simpler foldable bicycle that can carry more weight and is easier to become an electric bicycle.

[0020] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0022] Figure 1 A schematic side view of the unfolded state of the chainless folding bicycle with front pedals of the present application;

[0023] Figure 2 A schematic side view of the folded state of the chainless foldable bicycle with front pedals of the present application;

[0024] Figure 3 A schematic diagram of the three-dimensional structure of a chainless folding bicycle with front pedals in this application;

[0025] Figure 4 A rear view structural schematic diagram of a rear wheel connecting rod and a folding adjustment rod of a chainless folding bicycle with front pedals of the present application;

[0026] Figure 5 This is a front structural schematic diagram of the front wheel, pedals and transmission structure of the chainless folding bicycle with front pedals in this application;

[0027] Figure 6 This is a side structural schematic diagram of the front wheel, pedals and transmission structure of the chainless folding bicycle with front pedals in this application.

[0028] In the figure, 1-steering handle; 2-triangular fixed bracket; 3-front wheel; 4-folding adjustment rod; 5-rear wheel connecting rod; 6-seat; 7-pedal and transmission structure; 7-1-pedal; 7-2-pedal gear; 7-3-transmission gear; 7-4-front wheel gear; 8-front wheel support frame; 9-triangular variable bracket; 10-axle. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0030] The meaning of "and / or" described in this application means that the situations where each exists alone or both exist at the same time are included.

[0031] The meaning of "inside" and "outside" in this application refers to the direction from the surface to the center of the internal bearing relative to the crossbar itself, and the opposite direction is outside; it is not a specific limitation on the device mechanism of this application.

[0032] The term “connection” as used in this application may mean a direct connection between components or an indirect connection between components via other components.

[0033] like Figure 1-4As shown, the chainless folding bicycle with pedals in front provided by the present application comprises: a steering handlebar 1, a seat 6, a pedal 7-1, a wheel, and a body bracket connected thereto, wherein the body bracket comprises: a triangular fixed bracket 2, the lower part of which is connected to the front wheel 3 through a front wheel support frame 8; a triangular variable bracket 9, which comprises a rear wheel connecting rod 5 and a folding adjustment rod 4; the rear wheel connecting rod 5, one end of which is rotatably connected to the top of the triangular fixed bracket 2, and the other end is connected to the rear wheel; the folding adjustment rod 4, one end of which is rotatably connected to the rear wheel connecting rod 5, and the other end of which is connected to the lower part of the triangular fixed bracket 2, near the bottom, in the use state, and connected to the top of the triangular fixed bracket 2 in the folded state. When the bicycle is in the unfolded state, the body bracket is composed of two triangular brackets, and the structure is more stable, durable, and has stronger load-bearing capacity. The triangular bracket comprises a triangular fixed bracket 2 and a triangular variable bracket 9. The triangular fixed bracket 2 comprises a top crossbar, an oblique support rod, and a front support rod connected head to tail to form a triangular structure. The triangular variable bracket 9 includes a rear wheel connecting rod 5 and a folding adjustment rod 4. The rear wheel connecting rod 5 and the folding adjustment rod 4 are both movable double rod structures, which are arranged as two left and right rods. The double rod structure is composed of a left connecting rod and a right connecting rod. The triangular fixed bracket 2 is provided with fixing holes at two connecting positions of the folding adjustment rod 4; the folding adjustment rod 4 is connected and fixed to the fixing holes on the triangular fixed bracket 2 by bolts or latches. In the folded state, the left and right folding adjustment rods 4 are respectively fixed in the fixing holes on the left and right sides of the top cross bar of the triangular fixed bracket 2 by bolts or latches; in the use state, the left and right folding adjustment rods 4 are respectively fixed in the fixing holes on the left and right sides of the oblique support rod of the triangular fixed bracket 2 by bolts or latches.

[0034] The intersection of the top cross bar and the rear wheel connecting rod 5 is point A, and the rear wheel connecting rod 5 can rotate around point A. The intersection of the rear wheel connecting rod 5 and the folding adjustment rod 4 is point D, and the folding adjustment rod 4 can rotate around point D, and the other end of the folding adjustment rod 4 is point E. In the triangular fixed bracket 2, the angle between the top cross bar and the oblique support rod is not less than 45 degrees and not more than 60 degrees, and the angle between the top cross bar and the front support rod is greater than 90 degrees and less than 105 degrees; in the triangular variable bracket 9, when in use, the angle between the rear wheel connecting rod 5 and the oblique support rod is less than 75 degrees.

[0035] When the bicycle is in use, the left connecting rod and the right connecting rod of the foldable adjusting rod 4 are located on both sides of the oblique supporting rod and are fixed to the oblique supporting rod by bolts or pins. At this time, the end point E of the foldable adjusting rod 4 is on the oblique supporting rod.

[0036] When folding the bicycle, the bolts or pins that fix the folding adjustment rod 4 to the oblique support rod are removed, and the rear wheel connecting rod 5 is rotated close to the oblique support rod to make the rear wheel close to the front wheel 3, and then the left connecting rod and the right connecting rod of the folding adjustment rod 4 are fixed to the top cross bar by bolts or pins. At this time, the folding adjustment rod 4 is fixed to the oblique support rod, and the point E of the folding adjustment rod 4 is located on the top cross bar. The folding and unfolding of the bicycle of the present application are completed in a near plane, which greatly saves the demand for mechanical parts compared to the traditional vertical folding method, and the near-plane folding operation is simple and efficient.

[0037] Furthermore, the left and right sides of the front wheel 3 of the bicycle of the present application are respectively provided with pedals 7 - 1 transmission-connected thereto.

[0038] Furthermore, the front wheel support frame 8 is provided with a pedal gear 7-2, a transmission gear 7-3 and a front wheel gear 7-4 installed on the axle 10 of the front wheel 3 in sequence from top to bottom, wherein the pedal gear 7-2 is connected to the pedal 7-1, and the rotation of the pedal 7-1 drives the pedal gear 7-2 to rotate, thereby driving the front wheel gear 7-4 to rotate through the transmission gear 7-3, thereby making the bicycle move.

[0039] Furthermore, the front wheel support frame 8 includes two groups, which respectively connect the pedal on the left side of the front wheel 3 and the other pedal 7-1 on the right side of the front wheel 3; the transmission ratio of the pedal gear 7-2 and the transmission gear 7-3 is set to be greater than 1:2.5, and the transmission ratios between the two groups of front wheel support frames 8 and between the transmission gear 7-3 and the front wheel gear 7-4 are the same.

[0040] Furthermore, the height of the axis of the pedal gear 7-2 relative to the axis of the front wheel 3 is one third or less than one third of the height of the front wheel support frame 8. This design can lower the center of gravity, bring the pedal 7-1 close to the axle 10, facilitate pedaling to drive the bicycle, and improve the stability of the bicycle during movement.

[0041] like Figure 5-6 As shown, the pedal and transmission structure 7 are arranged on the front wheel 3. The pedal 7-1 is connected to the front wheel 3 through gear transmission. Specifically, a front wheel support frame 8 is arranged on the left and right sides of the front wheel 3, and the front wheel gear 7-4, the transmission gear 7-3 and the pedal gear 7-2 installed on the wheel axle 10 are arranged in sequence from bottom to top inside the front wheel support frames 8 on both sides. Among them, the pedal gear 7-2 is connected to the pedal 7-1, and the transmission ratios between the pedal gear 7-2, the transmission gear 7-3 and the front wheel gear 7-4 are the same in the front wheel support frames 8 on both sides.

[0042] When riding, the pedal 7-1 is rotated by force, driving the pedal gear 7-2 to rotate, thereby driving the front wheel gear 7-4 to rotate through the transmission gear 7-3, and the front wheel 3 rotates. The present application can make the bicycle move by stepping on one side or both sides of the pedal, and the structural design is simple and stable, and the riding is labor-saving and comfortable.

[0043] The seat 6 is arranged at point A, and the bicycle can also be equipped with a motor near the rear wheel; a counterweight bracket can also be arranged on the bicycle for loading items; and a battery for an electric bicycle can also be placed on the triangular bracket body of the bicycle, so as to facilitate the transformation of the bicycle of the present application into an electric bicycle.

[0044] As another embodiment of the present application, when the bicycle is in the unfolded state, the body support is composed of two triangular supports, and the structure is more stable, durable and has stronger load-bearing capacity. The triangular support includes a triangular fixed support 2 and a triangular variable support 9. The triangular fixed support 2 includes a top crossbar, an oblique support rod and a front support rod connected end to end to form a triangular structure. The triangular variable support 9 includes a rear wheel connecting rod 5 and a folding adjustment rod 4. The folding adjustment rod 4 is a movable double-rod structure, which is set to two left and right rods. The double-rod structure is composed of a left connecting rod and a right connecting rod. The rear wheel connecting rod 5 is a single-rod structure, and the rear wheel is connected through a fork-like structure at the bottom.

[0045] The triangular fixing bracket 2 is provided with fixing holes at two connection positions of the folding adjustment rod 4; the folding adjustment rod 4 is connected and fixed to the fixing holes on the triangular fixing bracket 2 by bolts or latches. In the folded state, the left and right folding adjustment rods 4 are respectively inserted into the fixing holes on the left and right sides of the top cross bar of the triangular fixing bracket 2 by bolts or latches for fixing; in the use state, the left and right folding adjustment rods 4 are respectively inserted into the fixing holes on the left and right sides of the oblique support rod of the triangular fixing bracket 2 by bolts or latches for fixing.

[0046] The intersection of the top cross bar and the oblique support bar is point A, and the rear wheel connecting rod 5 can rotate around point A. The intersection of the rear wheel connecting rod 5 and the folding adjustment rod 4 is point D, and the folding adjustment rod 4 can rotate around point D, and the other end point of the folding adjustment rod 4 is point E.

[0047] When the bicycle is in use, the left connecting rod and the right connecting rod of the foldable adjusting rod 4 are located on both sides of the oblique supporting rod and are fixed to the oblique supporting rod by bolts or pins. At this time, the end point E of the foldable adjusting rod 4 is on the oblique supporting rod.

[0048] When folding the bicycle, the bolts or pins that fix the folding adjustment rod 4 to the oblique support rod are removed, and the rear wheel connecting rod 5 is rotated close to the oblique support rod to make the rear wheel close to the front wheel 3, and then the left connecting rod and the right connecting rod of the folding adjustment rod 4 are fixed to the top cross bar by bolts or pins. At this time, the folding adjustment rod 4 is fixed to the oblique support rod, and the point E of the folding adjustment rod 4 is located on the top cross bar. The folding and unfolding of the bicycle of the present application are completed in a near plane, which greatly saves the demand for mechanical parts compared to the traditional vertical folding method, and the near-plane folding operation is simple and efficient.

[0049] It should be pointed out that the internal angle of the triangular bracket of the chainless folding bicycle with front pedals in the present application, the length of the bracket, etc. can be adjusted according to actual needs, and the transmission ratio between gears can also be adjusted according to usage requirements.

[0050] Those skilled in the art can understand that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A chainless folding bicycle with front pedals, comprising: A steering handle (1), a vehicle seat (6), pedals (7-1), wheels, and a vehicle body support connected thereto, characterized in that: The vehicle body bracket comprises: A triangular fixed bracket (2), the bottom of which is connected to the front wheel (3) via a front wheel support frame (8); A triangular variable bracket (9), comprising a rear wheel connecting rod (5) and a folding adjustment rod (4); The rear wheel connecting rod (5) has one end rotatably connected to the top of the triangular fixed bracket (2) and the other end connected to the rear wheel; The folding adjustment rod (4) has one end rotatably connected to the rear wheel connecting rod (5), and the other end is connected to the lower part of the triangular fixed bracket (2) in the use state, and is connected to the top of the triangular fixed bracket (2) in the folded state.

2. The chainless folding bicycle with front pedals as claimed in claim 1, characterized in that: The folding adjustment rods (4) are provided as two left and right ones.

3. The chainless folding bicycle with front pedals as claimed in claim 2, characterized in that: The triangular fixing bracket (2) is provided with fixing holes at two connection positions of the folding adjustment rod (4); The folding adjustment rod (4) is connected and fixed to the fixing hole on the triangular fixing bracket (2) via a bolt or a latch.

4. The chainless folding bicycle with front pedals as claimed in claim 3, characterized in that: The triangular fixed bracket (2) comprises a top cross bar, an oblique support bar and a front support bar connected end to end to form a triangular structure.

5. The chainless folding bicycle with front pedals as claimed in claim 4, characterized in that: When in the folded state, the left and right folding adjustment rods (4) are respectively inserted into the fixing holes on the left and right sides of the top cross bar of the triangular fixing bracket (2) by bolts or pins for fixing; In the use state, the left and right folding adjustment rods (4) are respectively inserted into the fixing holes on the left and right sides of the oblique support rod of the triangular fixing bracket (2) by bolts or pins for fixing.

6. The chainless folding bicycle with front pedals as claimed in claim 4, characterized in that: Pedals (7-1) are respectively provided on the left and right sides of the front wheel (3) and are transmission-connected thereto.

7. The chainless folding bicycle with front pedals as claimed in claim 6, characterized in that: The front wheel support frame (8) is provided with a pedal gear (7-2), a transmission gear (7-3), and a front wheel gear (7-4) mounted on the wheel axle (10) of the front wheel (3) in sequence from top to bottom, wherein the pedal gear (7-2) is connected to the pedal (7-1), and the pedal (7-1) rotates to drive the pedal gear (7-2) to rotate, thereby driving the front wheel gear (7-4) to rotate via the transmission gear (7-3), thereby causing the bicycle to move.

8. The chainless folding bicycle with front pedals as claimed in claim 7, characterized in that: The front wheel support frame (8) comprises two groups, respectively connecting a pedal on the left side of the front wheel (3) and another pedal (7-1) on the right side of the front wheel (3); The transmission ratio of the pedal gear (7-2) and the transmission gear (7-3) is set to be greater than 1:2.5, and the transmission ratios between the two sets of front wheel support frames (8) and between the transmission gear (7-3) and the front wheel gear (7-4) are the same.

9. The chainless folding bicycle with front pedals as claimed in claim 7, characterized in that: The ratio of the height of the axis of the pedal gear (7-2) relative to the axis of the front wheel (3) to the height of the front wheel support frame (8) is no more than one third.

10. The chainless folding bicycle with front pedals as claimed in claim 4, characterized in that: In the triangular fixed bracket (2), the included angle between the top cross bar and the oblique support bar is not less than 45 degrees and not more than 60 degrees, and the included angle between the top cross bar and the front support bar is greater than 90 degrees and less than 105 degrees; in the triangular variable bracket (9), in the use state, the included angle between the rear wheel connecting rod (5) and the oblique support rod is less than 75 degrees.

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